Heater



Jan. 19 1926, 1,570,489

F. M. HILL HEATER Filed March 8, 1924 2 Sheets-Shet 1 3" warez Fran/i M Hill- HEATER Filed March 8 1 2 Sheets-Sheet 2 22 I 27 fizz-Liz; 1 v A gmpgyflo'c Franli M Hill.

22 rag? Patented Jan. 19,1926.

UNITED STATES FRANK m. HILL, or nlvnasmn',

HEATER.

Applicatlon flled March 8, 1924. Serial mi. "e9 sage:

To all whom it may concern Be it known that I, FRANK M. HILL, a citizen of the United States, residing at Riverside, in the county of Burlington and State of New Jersey," have invented new and useful Improvements in Heaters, of which the following is a specification.

This invention relates to heaters either of the stove or furnace type, andan object of the invention is to provide a heater structure designed for utilizing the'maximum heating efliciency of the fuel, articur larly by a novel manner of directing the gases and normal products of combustion which utilizes all of the heating units in such gases for, heating the room or dwell- ,ing in which "the furnace is located, and

also to provide a structure wherein the said gases createdby combustion in the fur-1 nace are returned to the grate and passed successivel heating, w ereby the air or gasesdelivered to the fire-box and grate, for the purpose of providing a draft will, upon their entrance into the fire-box be heated, permitting them to reach amaximum degree of heat which heat is in turn radiated through a novel form of radiating dome for heating heated fluid in an adjacent compartment, which fluid may be delivered in any suitable manner to the-rooms where desired.

A furtherobject .of the invention is to rovide a novel form of pressure operated am er for controlling the chimney outlet ofto smoke or products of combustion, which damper is arranged to be 0 ened by pressure within the furnace or eater to permit a draft therethrou h when necessary and a further object of t e invention is to provide a draft creating device which may e used in connection with the furnace for creating an extra suctionor draft through the interior of the furnace for drawing t e ases or products of combustion downwardly ordelivery and re-delivery to the fire-box,

for a forced fire.

Other objects of the invention will ap ear in the following detail descri tion, an in the accompanying drawings w erein:

Figure 1-1s a vertical section through the improved furnace. v

Figure 2-is a horizontal section through the furnace on the line 22 of Fi re 1.

Figure 3is a detail vertic section through the fire box for re-l v grate 4 of approved construction issuptaken at ri ht angles-to he; tion shown z yigum' 1 Figure a-gd'etail let stack' or flue 'sh'o'w' structionr A I Referring in" "re particularly to the'drawings, the improvedheater structure isfillus trated in the drawings applied ltofwhat is commercially known ,as a pip eless furnace. However, it is to be understood, that the principle of the invention may" be applied to stoves or various other? types-ofiheating devices, without departing. from. the spirit of this invention: The heater comprises" the outer casing or shell :1 in which a firebox structure 2 is positionedwhich isjlined withfire-clay, as

shown at tiftlie inner surface. of which is corrugated to provide: fluted flue-like structures or'passagewaysfor the upward travel of the heatedproducts of combustion. A

inner surface of the center and the highest point of the heat radiating dome 9. The eated air and products of combustion pass upwardly through the flue 7 into the interior of the dome 9, which dome is preferably formed of cast metal for absorbing and radiating the heat from the heated air and products of combustion, and the heat radiated from the dome 9 heats the air 1n the outlet chamber 10 of the heater structure. The air coming from the room or heating systems enters through the register 11, passing downwardly through the outer inlet chamber 12 of the heater, to the bottom of the said chamber where it starts upwardly into the chamber -10. As the air or other I heating fluid passes upwardly through the chamber 10, it passes a out the dome 9, and is heated by the heat radiated from the dome, so that the heated air passes out through the register 11 into the room.

While in the drawings a hot air ipeless furnace is shown,'it is to be un erstood that the principle of the return flue 14 and the dome 8 may be used in connection with hot water, steam or analogous heating systems, and that the heating fluid passes through the suitable heating chamber 10 where it is heated by the radiating heat from the dome 9. The heated air and products of combustion after passing out of the dome-like flue 7 within the dome 9 are directed downwardly and through a downwardly opening-out flue 14 which opens out beneath the fire-box structure, as clearly shown in Fi ure 3 of the drawings, and into a suitable guiding compartment 15 from which the products of combustion and air are guided upwardly through the firebox structure, re-heated and all of the combustible material therein utilized, and again passed upwardly through the flue 7. It will be apparent, that the products of combustion and air delivered downwardly through the flue 14, will be the heavier and coldest of the air and products of combustion, as the major portion of the heat will be extracted therefrom and radiated through the dome 9.

Fresh air is admitted to the fire-box through the transverse air and fuel receiving assage-ways 16, and any suitable type of a justable air valve structures 17 may e provided for controlling the inletof fresh air into the fire-box. The dome-like flue 7 has its lower enlarged end 18 provided with a plurality of circumferentially sp aced openings 19 at its lower end through which the products of combustion may pass into the flue 7 for re-burning-that is-such products of combustion and air may pass throu h the openings 19 which would have a ten ency to eddy within the dome 9 and not pass downwardly through the flue 14, when only a light fire is use In Figure 3 of the drawings, a suitable air pump 20 of any approved construction is shown, the outlet 21 of which is posi-- tioned in the space 15 and this pump is pro vided for creating a draft or a forced draft for suction through the flue 14 and upwardly through the fire-box.

In the construction of the blower or pum 20- an auxiliary air inlet 20' is provide which has atmospherical communication independently of the inlet of the pump 20, and a valve 20 is provided whereby air may be admitted free from forced pressure through the pipe 21. a

A stack outlet 22 has communication with the chamber or space 23 within the dome 9, and is adapted to have communication with a suitable stack. A pressure 0 erated damper 24 is pivotally supported wi the pipe 25 for controllin the outlet of the ases and smoke into t e chimney or stack not shown). The damper 24 is pivoted at its upper end and hangs downwardly, and if it is so desired, it may have a chem 26 connected thereto by a suitable arm 27 to permit a counter-balance of any desired type, such as a spring or a weight to be con nected to the damper for regulating the quantity of pressure necessary for opening the damper or a thermostatic control (not shown) ofany approved construction may be used with a counterbalance. It is to be understood that the damper may be pivoted at its lower edge in lieu of the manner above specified.

In operation of the improved heater, when the fire is initially started, and a heavy draft is permitted to flow upwardly through the firebox, the smoke will be relatively dense in the space 23'within the dome 9, and a heavy pressure will be exerted against the damper 24, allowing the damper to open to permit the smoke and products of combustion to pass out into the stack. After the fire is properly started and is burning well, the pressure within the s ace 23 will be lowered, and the'damper 24 wi lautomatically close, cutting ofl' communication with the stack and causin the gases and other products of combust1on to be directed by the dome-shaped flue 7 against the uppermost portion of the dome 9, and diverted into the chamber 23, from which the majority of it will pass through the flue 14 below the grate structure 4 and travel upwardly through the grate and fire-box, for re-heating and burning of any combustible products therein,- thereby permitting the utilization of the maximum heating proclivities of-the fuel and of the gases and utilizing the heat which is in the present type of heaters, wasted through the chimney or stack outlet. The heating fluid used in heating the rooms or building in which the heater is located, enters the chamber 10 where it is heated by the heat radiating from the dome 9. It will be noted by particular reference to Figure 1 of the drawings, that the gases and products of combustion are directed by the flue 7 against the uppermost portion of the dome 9, and consequently, the direct flow of the light heated gases and products of combustion will be upwardly and the radiation of heat from the dome 9 will consequent- 1y be upwardly, to a large extent. As the gases are cooled through the radiation of their heat units through the dome 9, they will pass downwardly through the flue 14, and some of them will pass through the openings 19 into the dome-like lowermost portion flue 7, where they will here-burned and heated, and passed upwardly through the flue 7.

It is, of course, to be understood, that the invention may be constructed in various other manners and the parts associated in different relations, and therefore, do not desire to be limited in any manner, except as set forthin the claims hereunto appended;

lVhat I claim is:

1. In aheater, the combination of acfirebox, a dome forming a confining space for the products of combustion, means for guiding the products of combustion from the space within said dome to a point below said fire-box for passage upwardly through the fire-box, and a dome-like guiding flue within said first named dome, and enclosing the outlet from the fire-box for directing the products of combustion against the uppermost portion of said dome.

'2. In a heater, the combination of a hrebox, a dome forming a confining space for the products of combustion, means for guiding the products of combustion from the space within said do'meto a point below said fire-box for passage upwardly through the fire-box, and-a dome-like guiding flue within said first named dome, and enclosing the outlet from the fire-box for directing the products-0f combustion against the uppermost portion "of said dome, said dome-like flue provided with a plurality of openings adjacent to its lowermost end to permit a portion of the products of combustion to enterthe dome-like flue above the fire-box.

flue provided with a plurality of openings adjacent to its lowermost end to deflect a portion of the products of combustion into the dome-like flue above the fire-box, a stack outlet having communication with the space within the dome, and a ressure operated dam or for controlling t e outlet of, the pro nets of combustion through said stack outlet.

4. Inf a heater, the combination of, a firebox, a -dome'form1ng a confining s ace for the products of combustion, means or guiding the products of combustion from the space within said dome to a int below said fire box for passage upwar Iy through the, fire-box, and a dome-like guidin flue I within said first named dome, and one osing the outlet from the fire-box for directing-the products of combustion against the up ermost portion of said dome, said domeike flue provided with a plurality of openings adjacent its lowermost end to permit a portion of the products of combustion to enter the dome-like flue above the fire-box. a stack outlet having communication with the space within the dome, and a pressure operated damper for controlling the outlet of the products of combustion through said stack outlet, and means for creating a forced draft upwardly through said fire-box and drawing the products of combustion upwardly from said space. Y

5. In a heater, the combination of a firebox, said fire-box being'lined with fire-clay having its. inner surface corrugated to provide vertical-flues, a dome-like flue encompassing the upper end of said fire-box and having a constricted outlet, and a dome enclosing said'flue and forming a space for confining the products of combustion, said dome being formed of heat radiating material to permit radiation therethrough of the heat units delivered into the dome by the products of combustion.

6. Ina heater, the combination of a firebox, said fire-box being lined with fire-clay having its inner surface corrugated to provide vertical flues, a dome-like flue encompassing the upper end of said fire-box and aving a constricted outlet, a dome enclosing said flue and formin a space for confining the products of com nstion, said dome being formed of heat radiating material to permit radiation therethrough of the heat units delivered into the dome by the products of combustion, and means for gulding the roducts of combustion from the space wlthm the dome to a point below said firebox for passage upwardly through the fire- '7 In a heater, the combination of a firedam er for controlling the outlet of the pr nets of combustion through said stack outlet.

-In testimony whereof I aflix my signature.

FRANK M. HILL. 

